11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating; apparatus for water supply and sanitary purposes; water heaters and solar water heaters; water distilling units; water dispensers; water filters; heating installations not included in other classes; heat pumps for energy processing; solar energy powered heating installations; solar energy collectors for heating
37
Building construction; construction, installation and maintenance of installations for generating energy, water and food and for the processing and recycling of waste, landfill and manure; repair and maintenance of distribution stations for the supply of energy and facilities for the supply of heating and water; installation, maintenance and repair of lighting installations, lightning security installations and groundings, heating, ventilation and sanitary installations and industrial machinery and installations, plumbing and installation and maintenance of gas and water supply installations; technical advice on maintenance of installations and devices for generating energy, water and food; repair and maintenance of machines and apparatus for processing food
42
Design and development of energy management software; design and development of production installations and networks; advisory services relating to savings in the use of energy and water; technological consultancy in the field of energy production and use; water analysis; water quality control services; food research; technical research; inspection of electrical installations and equipment; certification services and issuance of certificates related thereto; drafting of quality statements/standards